(CNN)Over the past decade, CNN Heroes has recognized hundreds of remarkable individuals who have worked tirelessly to make the world a better place.
"CNN SuperHero: Above and Beyond" airs on CNN Friday at 10 p.m. ET. "CNN Heroes: An AllStar Tribute" airs Sunday at 8 p.m. ET. Now, to celebrate 10 years of the campaign, CNN is catching up with five past CNN Heroes of the Year to see where they are now and how their work has evolved in the years since they were honored.
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